diff --git a/frontend/src/AppProvider.tsx b/frontend/src/AppProvider.tsx
index 13ff1bc..7131c7e 100755
--- a/frontend/src/AppProvider.tsx
+++ b/frontend/src/AppProvider.tsx
@@ -32,7 +32,7 @@ const defaultConfig: Config = { ...demoViewConfig, site_description: "", site_na
 
 type Access = "ok" | "login" | "turnstile";
 
-export interface AppState {
+interface AppState {
   config: Config;
   configReady: boolean;
   servers: Server[];
diff --git a/frontend/src/format.ts b/frontend/src/format.ts
index 7fc8cb0..da78b4f 100644
--- a/frontend/src/format.ts
+++ b/frontend/src/format.ts
@@ -10,7 +10,7 @@ export function percent(used: number | null, total: number | null) {
   return safeTotal > 0 ? Math.min(100, Math.max(0, (number(used) / safeTotal) * 100)) : 0;
 }
 
-export interface FormattedBytes {
+interface FormattedBytes {
   value: string;
   unit: string;
 }
diff --git a/frontend/src/hooks/useNodeLatency.ts b/frontend/src/hooks/useNodeLatency.ts
index 11dcfa9..e7df072 100755
--- a/frontend/src/hooks/useNodeLatency.ts
+++ b/frontend/src/hooks/useNodeLatency.ts
@@ -29,7 +29,7 @@ export interface CarrierLatencyRow {
   lossBars: LatencyBar[];
 }
 
-export interface NodeLatencyStats {
+interface NodeLatencyStats {
   latencyDisplay: string;
   lossDisplay: string;
   latencyBars: LatencyBar[];
diff --git a/frontend/src/latency.ts b/frontend/src/latency.ts
index c414a2c..6116d0a 100644
--- a/frontend/src/latency.ts
+++ b/frontend/src/latency.ts
@@ -24,7 +24,7 @@ export const CARRIER_SLOTS = [
   { key: "unicom" as const, label: "联通", labelEn: "Unicom", color: "#60a5fa", aliases: ["联通", "chinaunicom", "unicom", "cucc", "cu"] },
 ] as const;
 
-export type CarrierSlot = typeof CARRIER_SLOTS[number];
+type CarrierSlot = typeof CARRIER_SLOTS[number];
 
 function latencyTone(value: number): LatencyTone {
   if (value <= 60) return "good";
@@ -97,7 +97,7 @@ export function selectCarrierTasks(
   return selected;
 }
 
-export interface LatencyBucket {
+interface LatencyBucket {
   timestamp: number;
   latency: number | null;
   loss: number | null;
diff --git a/frontend/src/transport.ts b/frontend/src/transport.ts
index b809f8d..6561c87 100644
--- a/frontend/src/transport.ts
+++ b/frontend/src/transport.ts
@@ -40,12 +40,12 @@ export function reconnectDelay(attempt: number, randomValue = Math.random()) {
   return Math.min(RECONNECT_MAX_DELAY, Math.round(jitteredDelay));
 }
 
-export interface LiveTransportHandlers {
+interface LiveTransportHandlers {
   onBatch: (updates: BatchUpdate[]) => void;
   onConnectedChange: (connected: boolean) => void;
 }
 
-export interface LiveTransportOptions {
+interface LiveTransportOptions {
   serverId: string | null;
 }